The board said in a legal notice published Wednesday that the purpose of the special meeting was to consider the resolution of a personnel matter. The board's website says it is responsible for only one position at the university - the presidency.
In abruptly postponing the meeting indefinitely Wednesday afternoon, the board said the action was necessary to allow further consideration of the matter.
The board also scrubbed a private executive session of the trustees on Thursday night, but still plans to meet in a closed session Friday morning.
President Rodney Erickson has said he plans to retire by June 30.